A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6135-01-120-9812
NSN 5985-01-413-9091
NSN 5960-01-142-1995
NSN 5998-01-403-2586
NSN 5915-01-074-6382
NSN 2925-01-197-7864
NSN 5855-01-125-4768
NSN 5935-00-293-1863
NSN 6685-00-325-0426
NSN 5835-00-827-1904
NSN 6650-01-633-0333
NSN 5996-00-826-8837